my opinion: i bought dx just because i needed to minimize effects of modding as the console was a gift to a girl just 6 months ago, so warranty was a priority.
i am sure i were regret choosing dx if the console would be mine and because of the 3x speed limitation i wouldn't recommend dx over zero to anybody except to ppl with the same needs as above. slow speed is apparent, all games and loading times are optimized to 6x speed at developing.

Hiya, I used cdburnerxp to burn the image on a Fujifilm DVD+R dual layer. Cdburnerxp does the layer break automatically. I just selected burn image, and then the file. It did take over 40 minutes to burn though at 2.4 X speed. The image was 8.3 GB and NTSC. The opening movie is quite awesome. I didn't notice any slow down in the intro either, and I was anticipating I would. I thought the game didn't work until I realized you have to turn the remote sideways.